drivers/media/video/v4l1-compat.c

   1 /*
   2  *
   3  *      Video for Linux Two
   4  *      Backward Compatibility Layer
   5  *
   6  *      Support subroutines for providing V4L2 drivers with backward
   7  *      compatibility with applications using the old API.
   8  *
   9  *      This program is free software; you can redistribute it and/or
  10  *      modify it under the terms of the GNU General Public License
  11  *      as published by the Free Software Foundation; either version
  12  *      2 of the License, or (at your option) any later version.
  13  *
  14  * Author:      Bill Dirks <bill@thedirks.org>
  15  *              et al.
  16  *
  17  */
  18
  19
  20 #include <linux/init.h>
  21 #include <linux/module.h>
  22 #include <linux/types.h>
  23 #include <linux/kernel.h>
  24 #include <linux/sched.h>
  25 #include <linux/mm.h>
  26 #include <linux/fs.h>
  27 #include <linux/file.h>
  28 #include <linux/string.h>
  29 #include <linux/errno.h>
  30 #include <linux/slab.h>
  31 #include <linux/videodev.h>
  32 #include <media/v4l2-common.h>
  33 #include <media/v4l2-ioctl.h>
  34
  35 #include <asm/uaccess.h>
  36 #include <asm/system.h>
  37 #include <asm/pgtable.h>
  38
  39 #ifdef CONFIG_KMOD
  40 #include <linux/kmod.h>
  41 #endif
  42
  43 static unsigned int debug;
  44 module_param(debug, int, 0644);
  45 MODULE_PARM_DESC(debug, "enable debug messages");
  46 MODULE_AUTHOR("Bill Dirks");
  47 MODULE_DESCRIPTION("v4l(1) compatibility layer for v4l2 drivers.");
  48 MODULE_LICENSE("GPL");
  49
  50 #define dprintk(fmt, arg...) \
  51         do { \
  52                 if (debug) \
  53                         printk(KERN_DEBUG "v4l1-compat: " fmt , ## arg);\
  54         } while (0)
  55
  56 /*
  57  *      I O C T L   T R A N S L A T I O N
  58  *
  59  *      From here on down is the code for translating the numerous
  60  *      ioctl commands from the old API to the new API.
  61  */
  62
  63 static int
  64 get_v4l_control(struct inode            *inode,
  65                 struct file             *file,
  66                 int                     cid,
  67                 v4l2_kioctl             drv)
  68 {
  69         struct v4l2_queryctrl   qctrl2;
  70         struct v4l2_control     ctrl2;
  71         int                     err;
  72
  73         qctrl2.id = cid;
  74         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
  75         if (err < 0)
  76                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
  77         if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
  78                 ctrl2.id = qctrl2.id;
  79                 err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
  80                 if (err < 0) {
  81                         dprintk("VIDIOC_G_CTRL: %d\n", err);
  82                         return 0;
  83                 }
  84                 return ((ctrl2.value - qctrl2.minimum) * 65535
  85                          + (qctrl2.maximum - qctrl2.minimum) / 2)
  86                         / (qctrl2.maximum - qctrl2.minimum);
  87         }
  88         return 0;
  89 }
  90
  91 static int
  92 set_v4l_control(struct inode            *inode,
  93                 struct file             *file,
  94                 int                     cid,
  95                 int                     value,
  96                 v4l2_kioctl             drv)
  97 {
  98         struct v4l2_queryctrl   qctrl2;
  99         struct v4l2_control     ctrl2;
 100         int                     err;
 101
 102         qctrl2.id = cid;
 103         err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
 104         if (err < 0)
 105                 dprintk("VIDIOC_QUERYCTRL: %d\n", err);
 106         if (err == 0 &&
 107             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED) &&
 108             !(qctrl2.flags & V4L2_CTRL_FLAG_GRABBED)) {
 109                 if (value < 0)
 110                         value = 0;
 111                 if (value > 65535)
 112                         value = 65535;
 113                 if (value && qctrl2.type == V4L2_CTRL_TYPE_BOOLEAN)
 114                         value = 65535;
 115                 ctrl2.id = qctrl2.id;
 116                 ctrl2.value =
 117                         (value * (qctrl2.maximum - qctrl2.minimum)
 118                          + 32767)
 119                         / 65535;
 120                 ctrl2.value += qctrl2.minimum;
 121                 err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
 122                 if (err < 0)
 123                         dprintk("VIDIOC_S_CTRL: %d\n", err);
 124         }
 125         return 0;
 126 }
 127
 128 /* ----------------------------------------------------------------- */
 129
 130 static const unsigned int palette2pixelformat[] = {
 131         [VIDEO_PALETTE_GREY]    = V4L2_PIX_FMT_GREY,
 132         [VIDEO_PALETTE_RGB555]  = V4L2_PIX_FMT_RGB555,
 133         [VIDEO_PALETTE_RGB565]  = V4L2_PIX_FMT_RGB565,
 134         [VIDEO_PALETTE_RGB24]   = V4L2_PIX_FMT_BGR24,
 135         [VIDEO_PALETTE_RGB32]   = V4L2_PIX_FMT_BGR32,
 136         /* yuv packed pixel */
 137         [VIDEO_PALETTE_YUYV]    = V4L2_PIX_FMT_YUYV,
 138         [VIDEO_PALETTE_YUV422]  = V4L2_PIX_FMT_YUYV,
 139         [VIDEO_PALETTE_UYVY]    = V4L2_PIX_FMT_UYVY,
 140         /* yuv planar */
 141         [VIDEO_PALETTE_YUV410P] = V4L2_PIX_FMT_YUV410,
 142         [VIDEO_PALETTE_YUV420]  = V4L2_PIX_FMT_YUV420,
 143         [VIDEO_PALETTE_YUV420P] = V4L2_PIX_FMT_YUV420,
 144         [VIDEO_PALETTE_YUV411P] = V4L2_PIX_FMT_YUV411P,
 145         [VIDEO_PALETTE_YUV422P] = V4L2_PIX_FMT_YUV422P,
 146 };
 147
 148 static unsigned int __pure
 149 palette_to_pixelformat(unsigned int palette)
 150 {
 151         if (palette < ARRAY_SIZE(palette2pixelformat))
 152                 return palette2pixelformat[palette];
 153         else
 154                 return 0;
 155 }
 156
 157 static unsigned int __attribute_const__
 158 pixelformat_to_palette(unsigned int pixelformat)
 159 {
 160         int     palette = 0;
 161         switch (pixelformat) {
 162         case V4L2_PIX_FMT_GREY:
 163                 palette = VIDEO_PALETTE_GREY;
 164                 break;
 165         case V4L2_PIX_FMT_RGB555:
 166                 palette = VIDEO_PALETTE_RGB555;
 167                 break;
 168         case V4L2_PIX_FMT_RGB565:
 169                 palette = VIDEO_PALETTE_RGB565;
 170                 break;
 171         case V4L2_PIX_FMT_BGR24:
 172                 palette = VIDEO_PALETTE_RGB24;
 173                 break;
 174         case V4L2_PIX_FMT_BGR32:
 175                 palette = VIDEO_PALETTE_RGB32;
 176                 break;
 177         /* yuv packed pixel */
 178         case V4L2_PIX_FMT_YUYV:
 179                 palette = VIDEO_PALETTE_YUYV;
 180                 break;
 181         case V4L2_PIX_FMT_UYVY:
 182                 palette = VIDEO_PALETTE_UYVY;
 183                 break;
 184         /* yuv planar */
 185         case V4L2_PIX_FMT_YUV410:
 186                 palette = VIDEO_PALETTE_YUV420;
 187                 break;
 188         case V4L2_PIX_FMT_YUV420:
 189                 palette = VIDEO_PALETTE_YUV420;
 190                 break;
 191         case V4L2_PIX_FMT_YUV411P:
 192                 palette = VIDEO_PALETTE_YUV411P;
 193                 break;
 194         case V4L2_PIX_FMT_YUV422P:
 195                 palette = VIDEO_PALETTE_YUV422P;
 196                 break;
 197         }
 198         return palette;
 199 }
 200
 201 /* ----------------------------------------------------------------- */
 202
 203 static int poll_one(struct file *file, struct poll_wqueues *pwq)
 204 {
 205         int retval = 1;
 206         poll_table *table;
 207
 208         poll_initwait(pwq);
 209         table = &pwq->pt;
 210         for (;;) {
 211                 int mask;
 212                 set_current_state(TASK_INTERRUPTIBLE);
 213                 mask = file->f_op->poll(file, table);
 214                 if (mask & POLLIN)
 215                         break;
 216                 table = NULL;
 217                 if (signal_pending(current)) {
 218                         retval = -ERESTARTSYS;
 219                         break;
 220                 }
 221                 schedule();
 222         }
 223         set_current_state(TASK_RUNNING);
 224         poll_freewait(pwq);
 225         return retval;
 226 }
 227
 228 static int count_inputs(
 229                         struct inode *inode,
 230                         struct file *file,
 231                         v4l2_kioctl drv)
 232 {
 233         struct v4l2_input input2;
 234         int i;
 235
 236         for (i = 0;; i++) {
 237                 memset(&input2, 0, sizeof(input2));
 238                 input2.index = i;
 239                 if (0 != drv(inode, file, VIDIOC_ENUMINPUT, &input2))
 240                         break;
 241         }
 242         return i;
 243 }
 244
 245 static int check_size(
 246                 struct inode *inode,
 247                 struct file *file,
 248                 v4l2_kioctl drv,
 249                 int *maxw,
 250                 int *maxh)
 251 {
 252         struct v4l2_fmtdesc desc2;
 253         struct v4l2_format  fmt2;
 254
 255         memset(&desc2, 0, sizeof(desc2));
 256         memset(&fmt2, 0, sizeof(fmt2));
 257
 258         desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 259         if (0 != drv(inode, file, VIDIOC_ENUM_FMT, &desc2))
 260                 goto done;
 261
 262         fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 263         fmt2.fmt.pix.width       = 10000;
 264         fmt2.fmt.pix.height      = 10000;
 265         fmt2.fmt.pix.pixelformat = desc2.pixelformat;
 266         if (0 != drv(inode, file, VIDIOC_TRY_FMT, &fmt2))
 267                 goto done;
 268
 269         *maxw = fmt2.fmt.pix.width;
 270         *maxh = fmt2.fmt.pix.height;
 271
 272 done:
 273         return 0;
 274 }
 275
 276 /* ----------------------------------------------------------------- */
 277
 278 static noinline int v4l1_compat_get_capabilities(
 279                                         struct video_capability *cap,
 280                                         struct inode *inode,
 281                                         struct file *file,
 282                                         v4l2_kioctl drv)
 283 {
 284         int err;
 285         struct v4l2_framebuffer fbuf;
 286         struct v4l2_capability *cap2;
 287
 288         cap2 = kzalloc(sizeof(*cap2), GFP_KERNEL);
 289         if (!cap2) {
 290                 err = -ENOMEM;
 291                 return err;
 292         }
 293         memset(cap, 0, sizeof(*cap));
 294         memset(&fbuf, 0, sizeof(fbuf));
 295
 296         err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
 297         if (err < 0) {
 298                 dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n", err);
 299                 goto done;
 300         }
 301         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
 302                 err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 303                 if (err < 0) {
 304                         dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n", err);
 305                         memset(&fbuf, 0, sizeof(fbuf));
 306                 }
 307                 err = 0;
 308         }
 309
 310         memcpy(cap->name, cap2->card,
 311                min(sizeof(cap->name), sizeof(cap2->card)));
 312         cap->name[sizeof(cap->name) - 1] = 0;
 313         if (cap2->capabilities & V4L2_CAP_VIDEO_CAPTURE)
 314                 cap->type |= VID_TYPE_CAPTURE;
 315         if (cap2->capabilities & V4L2_CAP_TUNER)
 316                 cap->type |= VID_TYPE_TUNER;
 317         if (cap2->capabilities & V4L2_CAP_VBI_CAPTURE)
 318                 cap->type |= VID_TYPE_TELETEXT;
 319         if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY)
 320                 cap->type |= VID_TYPE_OVERLAY;
 321         if (fbuf.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
 322                 cap->type |= VID_TYPE_CLIPPING;
 323
 324         cap->channels  = count_inputs(inode, file, drv);
 325         check_size(inode, file, drv,
 326                    &cap->maxwidth, &cap->maxheight);
 327         cap->audios    =  0; /* FIXME */
 328         cap->minwidth  = 48; /* FIXME */
 329         cap->minheight = 32; /* FIXME */
 330
 331 done:
 332         kfree(cap2);
 333         return err;
 334 }
 335
 336 static noinline int v4l1_compat_get_frame_buffer(
 337                                         struct video_buffer *buffer,
 338                                         struct inode *inode,
 339                                         struct file *file,
 340                                         v4l2_kioctl drv)
 341 {
 342         int err;
 343         struct v4l2_framebuffer fbuf;
 344
 345         memset(buffer, 0, sizeof(*buffer));
 346         memset(&fbuf, 0, sizeof(fbuf));
 347
 348         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 349         if (err < 0) {
 350                 dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n", err);
 351                 goto done;
 352         }
 353         buffer->base   = fbuf.base;
 354         buffer->height = fbuf.fmt.height;
 355         buffer->width  = fbuf.fmt.width;
 356
 357         switch (fbuf.fmt.pixelformat) {
 358         case V4L2_PIX_FMT_RGB332:
 359                 buffer->depth = 8;
 360                 break;
 361         case V4L2_PIX_FMT_RGB555:
 362                 buffer->depth = 15;
 363                 break;
 364         case V4L2_PIX_FMT_RGB565:
 365                 buffer->depth = 16;
 366                 break;
 367         case V4L2_PIX_FMT_BGR24:
 368                 buffer->depth = 24;
 369                 break;
 370         case V4L2_PIX_FMT_BGR32:
 371                 buffer->depth = 32;
 372                 break;
 373         default:
 374                 buffer->depth = 0;
 375         }
 376         if (fbuf.fmt.bytesperline) {
 377                 buffer->bytesperline = fbuf.fmt.bytesperline;
 378                 if (!buffer->depth && buffer->width)
 379                         buffer->depth   = ((fbuf.fmt.bytesperline<<3)
 380                                           + (buffer->width-1))
 381                                           / buffer->width;
 382         } else {
 383                 buffer->bytesperline =
 384                         (buffer->width * buffer->depth + 7) & 7;
 385                 buffer->bytesperline >>= 3;
 386         }
 387 done:
 388         return err;
 389 }
 390
 391 static noinline int v4l1_compat_set_frame_buffer(
 392                                         struct video_buffer *buffer,
 393                                         struct inode *inode,
 394                                         struct file *file,
 395                                         v4l2_kioctl drv)
 396 {
 397         int err;
 398         struct v4l2_framebuffer fbuf;
 399
 400         memset(&fbuf, 0, sizeof(fbuf));
 401         fbuf.base       = buffer->base;
 402         fbuf.fmt.height = buffer->height;
 403         fbuf.fmt.width  = buffer->width;
 404         switch (buffer->depth) {
 405         case 8:
 406                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB332;
 407                 break;
 408         case 15:
 409                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB555;
 410                 break;
 411         case 16:
 412                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_RGB565;
 413                 break;
 414         case 24:
 415                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR24;
 416                 break;
 417         case 32:
 418                 fbuf.fmt.pixelformat = V4L2_PIX_FMT_BGR32;
 419                 break;
 420         }
 421         fbuf.fmt.bytesperline = buffer->bytesperline;
 422         err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
 423         if (err < 0)
 424                 dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n", err);
 425         return err;
 426 }
 427
 428 static noinline int v4l1_compat_get_win_cap_dimensions(
 429                                         struct video_window *win,
 430                                         struct inode *inode,
 431                                         struct file *file,
 432                                         v4l2_kioctl drv)
 433 {
 434         int err;
 435         struct v4l2_format *fmt;
 436
 437         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 438         if (!fmt) {
 439                 err = -ENOMEM;
 440                 return err;
 441         }
 442         memset(win, 0, sizeof(*win));
 443
 444         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 445         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 446         if (err < 0)
 447                 dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n", err);
 448         if (err == 0) {
 449                 win->x         = fmt->fmt.win.w.left;
 450                 win->y         = fmt->fmt.win.w.top;
 451                 win->width     = fmt->fmt.win.w.width;
 452                 win->height    = fmt->fmt.win.w.height;
 453                 win->chromakey = fmt->fmt.win.chromakey;
 454                 win->clips     = NULL;
 455                 win->clipcount = 0;
 456                 goto done;
 457         }
 458
 459         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 460         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 461         if (err < 0) {
 462                 dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n", err);
 463                 goto done;
 464         }
 465         win->x         = 0;
 466         win->y         = 0;
 467         win->width     = fmt->fmt.pix.width;
 468         win->height    = fmt->fmt.pix.height;
 469         win->chromakey = 0;
 470         win->clips     = NULL;
 471         win->clipcount = 0;
 472 done:
 473         kfree(fmt);
 474         return err;
 475 }
 476
 477 static noinline int v4l1_compat_set_win_cap_dimensions(
 478                                         struct video_window *win,
 479                                         struct inode *inode,
 480                                         struct file *file,
 481                                         v4l2_kioctl drv)
 482 {
 483         int err, err1, err2;
 484         struct v4l2_format *fmt;
 485
 486         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 487         if (!fmt) {
 488                 err = -ENOMEM;
 489                 return err;
 490         }
 491         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 492         drv(inode, file, VIDIOC_STREAMOFF, &fmt->type);
 493         err1 = drv(inode, file, VIDIOC_G_FMT, fmt);
 494         if (err1 < 0)
 495                 dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n", err1);
 496         if (err1 == 0) {
 497                 fmt->fmt.pix.width  = win->width;
 498                 fmt->fmt.pix.height = win->height;
 499                 fmt->fmt.pix.field  = V4L2_FIELD_ANY;
 500                 fmt->fmt.pix.bytesperline = 0;
 501                 err = drv(inode, file, VIDIOC_S_FMT, fmt);
 502                 if (err < 0)
 503                         dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
 504                                 err);
 505                 win->width  = fmt->fmt.pix.width;
 506                 win->height = fmt->fmt.pix.height;
 507         }
 508
 509         memset(fmt, 0, sizeof(*fmt));
 510         fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
 511         fmt->fmt.win.w.left    = win->x;
 512         fmt->fmt.win.w.top     = win->y;
 513         fmt->fmt.win.w.width   = win->width;
 514         fmt->fmt.win.w.height  = win->height;
 515         fmt->fmt.win.chromakey = win->chromakey;
 516         fmt->fmt.win.clips     = (void __user *)win->clips;
 517         fmt->fmt.win.clipcount = win->clipcount;
 518         err2 = drv(inode, file, VIDIOC_S_FMT, fmt);
 519         if (err2 < 0)
 520                 dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n", err2);
 521
 522         if (err1 != 0 && err2 != 0)
 523                 err = err1;
 524         else
 525                 err = 0;
 526         kfree(fmt);
 527         return err;
 528 }
 529
 530 static noinline int v4l1_compat_turn_preview_on_off(
 531                                         int *on,
 532                                         struct inode *inode,
 533                                         struct file *file,
 534                                         v4l2_kioctl drv)
 535 {
 536         int err;
 537         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 538
 539         if (0 == *on) {
 540                 /* dirty hack time.  But v4l1 has no STREAMOFF
 541                  * equivalent in the API, and this one at
 542                  * least comes close ... */
 543                 drv(inode, file, VIDIOC_STREAMOFF, &captype);
 544         }
 545         err = drv(inode, file, VIDIOC_OVERLAY, on);
 546         if (err < 0)
 547                 dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n", err);
 548         return err;
 549 }
 550
 551 static noinline int v4l1_compat_get_input_info(
 552                                         struct video_channel *chan,
 553                                         struct inode *inode,
 554                                         struct file *file,
 555                                         v4l2_kioctl drv)
 556 {
 557         int err;
 558         struct v4l2_input       input2;
 559         v4l2_std_id             sid;
 560
 561         memset(&input2, 0, sizeof(input2));
 562         input2.index = chan->channel;
 563         err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
 564         if (err < 0) {
 565                 dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
 566                         "channel=%d err=%d\n", chan->channel, err);
 567                 goto done;
 568         }
 569         chan->channel = input2.index;
 570         memcpy(chan->name, input2.name,
 571                min(sizeof(chan->name), sizeof(input2.name)));
 572         chan->name[sizeof(chan->name) - 1] = 0;
 573         chan->tuners = (input2.type == V4L2_INPUT_TYPE_TUNER) ? 1 : 0;
 574         chan->flags = (chan->tuners) ? VIDEO_VC_TUNER : 0;
 575         switch (input2.type) {
 576         case V4L2_INPUT_TYPE_TUNER:
 577                 chan->type = VIDEO_TYPE_TV;
 578                 break;
 579         default:
 580         case V4L2_INPUT_TYPE_CAMERA:
 581                 chan->type = VIDEO_TYPE_CAMERA;
 582                 break;
 583         }
 584         chan->norm = 0;
 585         err = drv(inode, file, VIDIOC_G_STD, &sid);
 586         if (err < 0)
 587                 dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n", err);
 588         if (err == 0) {
 589                 if (sid & V4L2_STD_PAL)
 590                         chan->norm = VIDEO_MODE_PAL;
 591                 if (sid & V4L2_STD_NTSC)
 592                         chan->norm = VIDEO_MODE_NTSC;
 593                 if (sid & V4L2_STD_SECAM)
 594                         chan->norm = VIDEO_MODE_SECAM;
 595         }
 596 done:
 597         return err;
 598 }
 599
 600 static noinline int v4l1_compat_set_input(
 601                                         struct video_channel *chan,
 602                                         struct inode *inode,
 603                                         struct file *file,
 604                                         v4l2_kioctl drv)
 605 {
 606         int err;
 607         v4l2_std_id sid = 0;
 608
 609         err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
 610         if (err < 0)
 611                 dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n", err);
 612         switch (chan->norm) {
 613         case VIDEO_MODE_PAL:
 614                 sid = V4L2_STD_PAL;
 615                 break;
 616         case VIDEO_MODE_NTSC:
 617                 sid = V4L2_STD_NTSC;
 618                 break;
 619         case VIDEO_MODE_SECAM:
 620                 sid = V4L2_STD_SECAM;
 621                 break;
 622         }
 623         if (0 != sid) {
 624                 err = drv(inode, file, VIDIOC_S_STD, &sid);
 625                 if (err < 0)
 626                         dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n", err);
 627         }
 628         return err;
 629 }
 630
 631 static noinline int v4l1_compat_get_picture(
 632                                         struct video_picture *pict,
 633                                         struct inode *inode,
 634                                         struct file *file,
 635                                         v4l2_kioctl drv)
 636 {
 637         int err;
 638         struct v4l2_format *fmt;
 639
 640         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 641         if (!fmt) {
 642                 err = -ENOMEM;
 643                 return err;
 644         }
 645
 646         pict->brightness = get_v4l_control(inode, file,
 647                                            V4L2_CID_BRIGHTNESS, drv);
 648         pict->hue = get_v4l_control(inode, file,
 649                                     V4L2_CID_HUE, drv);
 650         pict->contrast = get_v4l_control(inode, file,
 651                                          V4L2_CID_CONTRAST, drv);
 652         pict->colour = get_v4l_control(inode, file,
 653                                        V4L2_CID_SATURATION, drv);
 654         pict->whiteness = get_v4l_control(inode, file,
 655                                           V4L2_CID_WHITENESS, drv);
 656
 657         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 658         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 659         if (err < 0) {
 660                 dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n", err);
 661                 goto done;
 662         }
 663
 664         pict->depth   = ((fmt->fmt.pix.bytesperline << 3)
 665                          + (fmt->fmt.pix.width - 1))
 666                          / fmt->fmt.pix.width;
 667         pict->palette = pixelformat_to_palette(
 668                 fmt->fmt.pix.pixelformat);
 669 done:
 670         kfree(fmt);
 671         return err;
 672 }
 673
 674 static noinline int v4l1_compat_set_picture(
 675                                         struct video_picture *pict,
 676                                         struct inode *inode,
 677                                         struct file *file,
 678                                         v4l2_kioctl drv)
 679 {
 680         int err;
 681         struct v4l2_framebuffer fbuf;
 682         int mem_err = 0, ovl_err = 0;
 683         struct v4l2_format *fmt;
 684
 685         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
 686         if (!fmt) {
 687                 err = -ENOMEM;
 688                 return err;
 689         }
 690         memset(&fbuf, 0, sizeof(fbuf));
 691
 692         set_v4l_control(inode, file,
 693                         V4L2_CID_BRIGHTNESS, pict->brightness, drv);
 694         set_v4l_control(inode, file,
 695                         V4L2_CID_HUE, pict->hue, drv);
 696         set_v4l_control(inode, file,
 697                         V4L2_CID_CONTRAST, pict->contrast, drv);
 698         set_v4l_control(inode, file,
 699                         V4L2_CID_SATURATION, pict->colour, drv);
 700         set_v4l_control(inode, file,
 701                         V4L2_CID_WHITENESS, pict->whiteness, drv);
 702         /*
 703          * V4L1 uses this ioctl to set both memory capture and overlay
 704          * pixel format, while V4L2 has two different ioctls for this.
 705          * Some cards may not support one or the other, and may support
 706          * different pixel formats for memory vs overlay.
 707          */
 708
 709         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 710         err = drv(inode, file, VIDIOC_G_FMT, fmt);
 711         /* If VIDIOC_G_FMT failed, then the driver likely doesn't
 712            support memory capture.  Trying to set the memory capture
 713            parameters would be pointless.  */
 714         if (err < 0) {
 715                 dprintk("VIDIOCSPICT / VIDIOC_G_FMT: %d\n", err);
 716                 mem_err = -1000;  /* didn't even try */
 717         } else if (fmt->fmt.pix.pixelformat !=
 718                  palette_to_pixelformat(pict->palette)) {
 719                 fmt->fmt.pix.pixelformat = palette_to_pixelformat(
 720                         pict->palette);
 721                 mem_err = drv(inode, file, VIDIOC_S_FMT, fmt);
 722                 if (mem_err < 0)
 723                         dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
 724                                 mem_err);
 725         }
 726
 727         err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
 728         /* If VIDIOC_G_FBUF failed, then the driver likely doesn't
 729            support overlay.  Trying to set the overlay parameters
 730            would be quite pointless.  */
 731         if (err < 0) {
 732                 dprintk("VIDIOCSPICT / VIDIOC_G_FBUF: %d\n", err);
 733                 ovl_err = -1000;  /* didn't even try */
 734         } else if (fbuf.fmt.pixelformat !=
 735                  palette_to_pixelformat(pict->palette)) {
 736                 fbuf.fmt.pixelformat = palette_to_pixelformat(
 737                         pict->palette);
 738                 ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
 739                 if (ovl_err < 0)
 740                         dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
 741                                 ovl_err);
 742         }
 743         if (ovl_err < 0 && mem_err < 0) {
 744                 /* ioctl failed, couldn't set either parameter */
 745                 if (mem_err != -1000)
 746                         err = mem_err;
 747                 else if (ovl_err == -EPERM)
 748                         err = 0;
 749                 else
 750                         err = ovl_err;
 751         } else
 752                 err = 0;
 753         kfree(fmt);
 754         return err;
 755 }
 756
 757 static noinline int v4l1_compat_get_tuner(
 758                                         struct video_tuner *tun,
 759                                         struct inode *inode,
 760                                         struct file *file,
 761                                         v4l2_kioctl drv)
 762 {
 763         int err, i;
 764         struct v4l2_tuner       tun2;
 765         struct v4l2_standard    std2;
 766         v4l2_std_id             sid;
 767
 768         memset(&tun2, 0, sizeof(tun2));
 769         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 770         if (err < 0) {
 771                 dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n", err);
 772                 goto done;
 773         }
 774         memcpy(tun->name, tun2.name,
 775                min(sizeof(tun->name), sizeof(tun2.name)));
 776         tun->name[sizeof(tun->name) - 1] = 0;
 777         tun->rangelow = tun2.rangelow;
 778         tun->rangehigh = tun2.rangehigh;
 779         tun->flags = 0;
 780         tun->mode = VIDEO_MODE_AUTO;
 781
 782         for (i = 0; i < 64; i++) {
 783                 memset(&std2, 0, sizeof(std2));
 784                 std2.index = i;
 785                 if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
 786                         break;
 787                 if (std2.id & V4L2_STD_PAL)
 788                         tun->flags |= VIDEO_TUNER_PAL;
 789                 if (std2.id & V4L2_STD_NTSC)
 790                         tun->flags |= VIDEO_TUNER_NTSC;
 791                 if (std2.id & V4L2_STD_SECAM)
 792                         tun->flags |= VIDEO_TUNER_SECAM;
 793         }
 794
 795         err = drv(inode, file, VIDIOC_G_STD, &sid);
 796         if (err < 0)
 797                 dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n", err);
 798         if (err == 0) {
 799                 if (sid & V4L2_STD_PAL)
 800                         tun->mode = VIDEO_MODE_PAL;
 801                 if (sid & V4L2_STD_NTSC)
 802                         tun->mode = VIDEO_MODE_NTSC;
 803                 if (sid & V4L2_STD_SECAM)
 804                         tun->mode = VIDEO_MODE_SECAM;
 805         }
 806
 807         if (tun2.capability & V4L2_TUNER_CAP_LOW)
 808                 tun->flags |= VIDEO_TUNER_LOW;
 809         if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 810                 tun->flags |= VIDEO_TUNER_STEREO_ON;
 811         tun->signal = tun2.signal;
 812 done:
 813         return err;
 814 }
 815
 816 static noinline int v4l1_compat_select_tuner(
 817                                         struct video_tuner *tun,
 818                                         struct inode *inode,
 819                                         struct file *file,
 820                                         v4l2_kioctl drv)
 821 {
 822         int err;
 823         struct v4l2_tuner       t;/*84 bytes on x86_64*/
 824         memset(&t, 0, sizeof(t));
 825
 826         t.index = tun->tuner;
 827
 828         err = drv(inode, file, VIDIOC_S_INPUT, &t);
 829         if (err < 0)
 830                 dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n", err);
 831         return err;
 832 }
 833
 834 static noinline int v4l1_compat_get_frequency(
 835                                         unsigned long *freq,
 836                                         struct inode *inode,
 837                                         struct file *file,
 838                                         v4l2_kioctl drv)
 839 {
 840         int err;
 841         struct v4l2_frequency   freq2;
 842         memset(&freq2, 0, sizeof(freq2));
 843
 844         freq2.tuner = 0;
 845         err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 846         if (err < 0)
 847                 dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n", err);
 848         if (0 == err)
 849                 *freq = freq2.frequency;
 850         return err;
 851 }
 852
 853 static noinline int v4l1_compat_set_frequency(
 854                                         unsigned long *freq,
 855                                         struct inode *inode,
 856                                         struct file *file,
 857                                         v4l2_kioctl drv)
 858 {
 859         int err;
 860         struct v4l2_frequency   freq2;
 861         memset(&freq2, 0, sizeof(freq2));
 862
 863         drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
 864         freq2.frequency = *freq;
 865         err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
 866         if (err < 0)
 867                 dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n", err);
 868         return err;
 869 }
 870
 871 static noinline int v4l1_compat_get_audio(
 872                                         struct video_audio *aud,
 873                                         struct inode *inode,
 874                                         struct file *file,
 875                                         v4l2_kioctl drv)
 876 {
 877         int err, i;
 878         struct v4l2_queryctrl   qctrl2;
 879         struct v4l2_audio       aud2;
 880         struct v4l2_tuner       tun2;
 881         memset(&aud2, 0, sizeof(aud2));
 882
 883         err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
 884         if (err < 0) {
 885                 dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n", err);
 886                 goto done;
 887         }
 888         memcpy(aud->name, aud2.name,
 889                min(sizeof(aud->name), sizeof(aud2.name)));
 890         aud->name[sizeof(aud->name) - 1] = 0;
 891         aud->audio = aud2.index;
 892         aud->flags = 0;
 893         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
 894         if (i >= 0) {
 895                 aud->volume = i;
 896                 aud->flags |= VIDEO_AUDIO_VOLUME;
 897         }
 898         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
 899         if (i >= 0) {
 900                 aud->bass = i;
 901                 aud->flags |= VIDEO_AUDIO_BASS;
 902         }
 903         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
 904         if (i >= 0) {
 905                 aud->treble = i;
 906                 aud->flags |= VIDEO_AUDIO_TREBLE;
 907         }
 908         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
 909         if (i >= 0) {
 910                 aud->balance = i;
 911                 aud->flags |= VIDEO_AUDIO_BALANCE;
 912         }
 913         i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
 914         if (i >= 0) {
 915                 if (i)
 916                         aud->flags |= VIDEO_AUDIO_MUTE;
 917                 aud->flags |= VIDEO_AUDIO_MUTABLE;
 918         }
 919         aud->step = 1;
 920         qctrl2.id = V4L2_CID_AUDIO_VOLUME;
 921         if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
 922             !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
 923                 aud->step = qctrl2.step;
 924         aud->mode = 0;
 925
 926         memset(&tun2, 0, sizeof(tun2));
 927         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 928         if (err < 0) {
 929                 dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n", err);
 930                 err = 0;
 931                 goto done;
 932         }
 933
 934         if (tun2.rxsubchans & V4L2_TUNER_SUB_LANG2)
 935                 aud->mode = VIDEO_SOUND_LANG1 | VIDEO_SOUND_LANG2;
 936         else if (tun2.rxsubchans & V4L2_TUNER_SUB_STEREO)
 937                 aud->mode = VIDEO_SOUND_STEREO;
 938         else if (tun2.rxsubchans & V4L2_TUNER_SUB_MONO)
 939                 aud->mode = VIDEO_SOUND_MONO;
 940 done:
 941         return err;
 942 }
 943
 944 static noinline int v4l1_compat_set_audio(
 945                                         struct video_audio *aud,
 946                                         struct inode *inode,
 947                                         struct file *file,
 948                                         v4l2_kioctl drv)
 949 {
 950         int err;
 951         struct v4l2_audio       aud2;
 952         struct v4l2_tuner       tun2;
 953
 954         memset(&aud2, 0, sizeof(aud2));
 955         memset(&tun2, 0, sizeof(tun2));
 956
 957         aud2.index = aud->audio;
 958         err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
 959         if (err < 0) {
 960                 dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n", err);
 961                 goto done;
 962         }
 963
 964         set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
 965                         aud->volume, drv);
 966         set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
 967                         aud->bass, drv);
 968         set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
 969                         aud->treble, drv);
 970         set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
 971                         aud->balance, drv);
 972         set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
 973                         !!(aud->flags & VIDEO_AUDIO_MUTE), drv);
 974
 975         err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
 976         if (err < 0)
 977                 dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n", err);
 978         if (err == 0) {
 979                 switch (aud->mode) {
 980                 default:
 981                 case VIDEO_SOUND_MONO:
 982                 case VIDEO_SOUND_LANG1:
 983                         tun2.audmode = V4L2_TUNER_MODE_MONO;
 984                         break;
 985                 case VIDEO_SOUND_STEREO:
 986                         tun2.audmode = V4L2_TUNER_MODE_STEREO;
 987                         break;
 988                 case VIDEO_SOUND_LANG2:
 989                         tun2.audmode = V4L2_TUNER_MODE_LANG2;
 990                         break;
 991                 }
 992                 err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
 993                 if (err < 0)
 994                         dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n", err);
 995         }
 996         err = 0;
 997 done:
 998         return err;
 999 }
1000
1001 static noinline int v4l1_compat_capture_frame(
1002                                         struct video_mmap *mm,
1003                                         struct inode *inode,
1004                                         struct file *file,
1005                                         v4l2_kioctl drv)
1006 {
1007         int err;
1008         enum v4l2_buf_type      captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1009         struct v4l2_buffer      buf;
1010         struct v4l2_format      *fmt;
1011
1012         fmt = kzalloc(sizeof(*fmt), GFP_KERNEL);
1013         if (!fmt) {
1014                 err = -ENOMEM;
1015                 return err;
1016         }
1017         memset(&buf, 0, sizeof(buf));
1018
1019         fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1020         err = drv(inode, file, VIDIOC_G_FMT, fmt);
1021         if (err < 0) {
1022                 dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n", err);
1023                 goto done;
1024         }
1025         if (mm->width   != fmt->fmt.pix.width  ||
1026             mm->height  != fmt->fmt.pix.height ||
1027             palette_to_pixelformat(mm->format) !=
1028             fmt->fmt.pix.pixelformat) {
1029                 /* New capture format...  */
1030                 fmt->fmt.pix.width = mm->width;
1031                 fmt->fmt.pix.height = mm->height;
1032                 fmt->fmt.pix.pixelformat =
1033                         palette_to_pixelformat(mm->format);
1034                 fmt->fmt.pix.field = V4L2_FIELD_ANY;
1035                 fmt->fmt.pix.bytesperline = 0;
1036                 err = drv(inode, file, VIDIOC_S_FMT, fmt);
1037                 if (err < 0) {
1038                         dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n", err);
1039                         goto done;
1040                 }
1041         }
1042         buf.index = mm->frame;
1043         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1044         err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1045         if (err < 0) {
1046                 dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n", err);
1047                 goto done;
1048         }
1049         err = drv(inode, file, VIDIOC_QBUF, &buf);
1050         if (err < 0) {
1051                 dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n", err);
1052                 goto done;
1053         }
1054         err = drv(inode, file, VIDIOC_STREAMON, &captype);
1055         if (err < 0)
1056                 dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n", err);
1057 done:
1058         kfree(fmt);
1059         return err;
1060 }
1061
1062 static noinline int v4l1_compat_sync(
1063                                 int *i,
1064                                 struct inode *inode,
1065                                 struct file *file,
1066                                 v4l2_kioctl drv)
1067 {
1068         int err;
1069         enum v4l2_buf_type captype = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1070         struct v4l2_buffer buf;
1071         struct poll_wqueues *pwq;
1072
1073         memset(&buf, 0, sizeof(buf));
1074         buf.index = *i;
1075         buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1076         err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1077         if (err < 0) {
1078                 /*  No such buffer */
1079                 dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
1080                 goto done;
1081         }
1082         if (!(buf.flags & V4L2_BUF_FLAG_MAPPED)) {
1083                 /* Buffer is not mapped  */
1084                 err = -EINVAL;
1085                 goto done;
1086         }
1087
1088         /* make sure capture actually runs so we don't block forever */
1089         err = drv(inode, file, VIDIOC_STREAMON, &captype);
1090         if (err < 0) {
1091                 dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n", err);
1092                 goto done;
1093         }
1094
1095         pwq = kmalloc(sizeof(*pwq), GFP_KERNEL);
1096         /*  Loop as long as the buffer is queued, but not done  */
1097         while ((buf.flags & (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE))
1098                                                 == V4L2_BUF_FLAG_QUEUED) {
1099                 err = poll_one(file, pwq);
1100                 if (err < 0 ||  /* error or sleep was interrupted  */
1101                     err == 0)   /* timeout? Shouldn't occur.  */
1102                         break;
1103                 err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
1104                 if (err < 0)
1105                         dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
1106         }
1107         kfree(pwq);
1108         if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
1109                 goto done;
1110         do {
1111                 err = drv(inode, file, VIDIOC_DQBUF, &buf);
1112                 if (err < 0)
1113                         dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n", err);
1114         } while (err == 0 && buf.index != *i);
1115 done:
1116         return err;
1117 }
1118
1119 static noinline int v4l1_compat_get_vbi_format(
1120                                 struct vbi_format *fmt,
1121                                 struct inode *inode,
1122                                 struct file *file,
1123                                 v4l2_kioctl drv)
1124 {
1125         int err;
1126         struct v4l2_format *fmt2;
1127
1128         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1129         if (!fmt2) {
1130                 err = -ENOMEM;
1131                 return err;
1132         }
1133         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1134
1135         err = drv(inode, file, VIDIOC_G_FMT, fmt2);
1136         if (err < 0) {
1137                 dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
1138                 goto done;
1139         }
1140         if (fmt2->fmt.vbi.sample_format != V4L2_PIX_FMT_GREY) {
1141                 err = -EINVAL;
1142                 goto done;
1143         }
1144         memset(fmt, 0, sizeof(*fmt));
1145         fmt->samples_per_line = fmt2->fmt.vbi.samples_per_line;
1146         fmt->sampling_rate    = fmt2->fmt.vbi.sampling_rate;
1147         fmt->sample_format    = VIDEO_PALETTE_RAW;
1148         fmt->start[0]         = fmt2->fmt.vbi.start[0];
1149         fmt->count[0]         = fmt2->fmt.vbi.count[0];
1150         fmt->start[1]         = fmt2->fmt.vbi.start[1];
1151         fmt->count[1]         = fmt2->fmt.vbi.count[1];
1152         fmt->flags            = fmt2->fmt.vbi.flags & 0x03;
1153 done:
1154         kfree(fmt2);
1155         return err;
1156 }
1157
1158 static noinline int v4l1_compat_set_vbi_format(
1159                                 struct vbi_format *fmt,
1160                                 struct inode *inode,
1161                                 struct file *file,
1162                                 v4l2_kioctl drv)
1163 {
1164         int err;
1165         struct v4l2_format      *fmt2 = NULL;
1166
1167         if (VIDEO_PALETTE_RAW != fmt->sample_format) {
1168                 err = -EINVAL;
1169                 return err;
1170         }
1171
1172         fmt2 = kzalloc(sizeof(*fmt2), GFP_KERNEL);
1173         if (!fmt2) {
1174                 err = -ENOMEM;
1175                 return err;
1176         }
1177         fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
1178         fmt2->fmt.vbi.samples_per_line = fmt->samples_per_line;
1179         fmt2->fmt.vbi.sampling_rate    = fmt->sampling_rate;
1180         fmt2->fmt.vbi.sample_format    = V4L2_PIX_FMT_GREY;
1181         fmt2->fmt.vbi.start[0]         = fmt->start[0];
1182         fmt2->fmt.vbi.count[0]         = fmt->count[0];
1183         fmt2->fmt.vbi.start[1]         = fmt->start[1];
1184         fmt2->fmt.vbi.count[1]         = fmt->count[1];
1185         fmt2->fmt.vbi.flags            = fmt->flags;
1186         err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
1187         if (err < 0) {
1188                 dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
1189                 goto done;
1190         }
1191
1192         if (fmt2->fmt.vbi.samples_per_line != fmt->samples_per_line ||
1193             fmt2->fmt.vbi.sampling_rate    != fmt->sampling_rate    ||
1194             fmt2->fmt.vbi.sample_format    != V4L2_PIX_FMT_GREY     ||
1195             fmt2->fmt.vbi.start[0]         != fmt->start[0]         ||
1196             fmt2->fmt.vbi.count[0]         != fmt->count[0]         ||
1197             fmt2->fmt.vbi.start[1]         != fmt->start[1]         ||
1198             fmt2->fmt.vbi.count[1]         != fmt->count[1]         ||
1199             fmt2->fmt.vbi.flags            != fmt->flags) {
1200                 err = -EINVAL;
1201                 goto done;
1202         }
1203         err = drv(inode, file, VIDIOC_S_FMT, fmt2);
1204         if (err < 0)
1205                 dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
1206 done:
1207         kfree(fmt2);
1208         return err;
1209 }
1210
1211 /*
1212  *      This function is exported.
1213  */
1214 int
1215 v4l_compat_translate_ioctl(struct inode         *inode,
1216                            struct file          *file,
1217                            int                  cmd,
1218                            void                 *arg,
1219                            v4l2_kioctl          drv)
1220 {
1221         int err;
1222
1223         switch (cmd) {
1224         case VIDIOCGCAP:        /* capability */
1225                 err = v4l1_compat_get_capabilities(arg, inode, file, drv);
1226                 break;
1227         case VIDIOCGFBUF: /*  get frame buffer  */
1228                 err = v4l1_compat_get_frame_buffer(arg, inode, file, drv);
1229                 break;
1230         case VIDIOCSFBUF: /*  set frame buffer  */
1231                 err = v4l1_compat_set_frame_buffer(arg, inode, file, drv);
1232                 break;
1233         case VIDIOCGWIN: /*  get window or capture dimensions  */
1234                 err = v4l1_compat_get_win_cap_dimensions(arg, inode, file, drv);
1235                 break;
1236         case VIDIOCSWIN: /*  set window and/or capture dimensions  */
1237                 err = v4l1_compat_set_win_cap_dimensions(arg, inode, file, drv);
1238                 break;
1239         case VIDIOCCAPTURE: /*  turn on/off preview  */
1240                 err = v4l1_compat_turn_preview_on_off(arg, inode, file, drv);
1241                 break;
1242         case VIDIOCGCHAN: /*  get input information  */
1243                 err = v4l1_compat_get_input_info(arg, inode, file, drv);
1244                 break;
1245         case VIDIOCSCHAN: /*  set input  */
1246                 err = v4l1_compat_set_input(arg, inode, file, drv);
1247                 break;
1248         case VIDIOCGPICT: /*  get tone controls & partial capture format  */
1249                 err = v4l1_compat_get_picture(arg, inode, file, drv);
1250                 break;
1251         case VIDIOCSPICT: /*  set tone controls & partial capture format  */
1252                 err = v4l1_compat_set_picture(arg, inode, file, drv);
1253                 break;
1254         case VIDIOCGTUNER: /*  get tuner information  */
1255                 err = v4l1_compat_get_tuner(arg, inode, file, drv);
1256                 break;
1257         case VIDIOCSTUNER: /*  select a tuner input  */
1258                 err = v4l1_compat_select_tuner(arg, inode, file, drv);
1259                 break;
1260         case VIDIOCGFREQ: /*  get frequency  */
1261                 err = v4l1_compat_get_frequency(arg, inode, file, drv);
1262                 break;
1263         case VIDIOCSFREQ: /*  set frequency  */
1264                 err = v4l1_compat_set_frequency(arg, inode, file, drv);
1265                 break;
1266         case VIDIOCGAUDIO: /*  get audio properties/controls  */
1267                 err = v4l1_compat_get_audio(arg, inode, file, drv);
1268                 break;
1269         case VIDIOCSAUDIO: /*  set audio controls  */
1270                 err = v4l1_compat_set_audio(arg, inode, file, drv);
1271                 break;
1272         case VIDIOCMCAPTURE: /*  capture a frame  */
1273                 err = v4l1_compat_capture_frame(arg, inode, file, drv);
1274                 break;
1275         case VIDIOCSYNC: /*  wait for a frame  */
1276                 err = v4l1_compat_sync(arg, inode, file, drv);
1277                 break;
1278         case VIDIOCGVBIFMT: /* query VBI data capture format */
1279                 err = v4l1_compat_get_vbi_format(arg, inode, file, drv);
1280                 break;
1281         case VIDIOCSVBIFMT:
1282                 err = v4l1_compat_set_vbi_format(arg, inode, file, drv);
1283                 break;
1284         default:
1285                 err = -ENOIOCTLCMD;
1286                 break;
1287         }
1288
1289         return err;
1290 }
1291 EXPORT_SYMBOL(v4l_compat_translate_ioctl);
1292
1293 /*
1294  * Local variables:
1295  * c-basic-offset: 8
1296  * End:
1297  */